Today, nearly every major fashion company has its own athletic line. Leggings, or tights, are more trendy than jeans, though obviously that wasn't always the case. Blogilates creator Cassey Ho worked with Mode to create a video showing what workout clothing has looked like over the past decades.
Enjoy, and be thankful that athleisure is finally a thing. We're so much more comfortable than people were in the 1920s!